An old case caused the Shen family to overturn overnight. The orphan Shen Hanxing bided his time and lurked, watching for an opportunity to seek the truth. By a stroke of luck, he tracked down his twin sister Gu Qinglan, who had ended up in the enemy family's mansion. An ancient sword hiding huge hidden dangers attracted countless greedy villains; traitors of the clan and malicious forces appeared one after another, setting up layer upon layer of deadly traps. Bearing their family bloodline, the Shen siblings fought side by side with the righteous men of the Waning Moon Alliance, parting layer upon layer of fog amidst swords and shadows. Facing personal blood debts and grievances, they chose to prioritize the common people, risked their lives in danger, and tried their utmost to prevent a huge disaster about to sweep across the world.